Hello guys- I'm looking to purchase the book of the same title as this topic but it seems that Amazon.com has 2 editions of the book, one published in 1989 and one published much more recently. The 1989 edition is the one with all of the reviews and popularity that accompany this book, so I'm leaning towards it in my decision but was nevertheless wondering if anyone had specific information regarding the differences between the two and whether I would be fine off by simply purchasing the 1989 edition.

I have the updated one, but it probably doesn't matter too much, considering the logic content can't really change. If you notice, many of those updates generally feature a new preface. It's an interesting read. A lot of these books help in the sense that you can discern flaws in arguments. When I was in TM, I asked about things like ad hom, post hoc, etc. and they didn't seem to get the terms. They used Robin's wording of the fallacies. To me, that was kind of odd. You can punch in "fallacy" and most academic institutions will have a list and examples, which could help. I teach English Comp, so I teach them a lot. Hope this helps you! Check out http://lsatblog.blogspot.com/ for more books.